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CCS/EK-TM4C1294XL: Debugging of TM4C1294NCPDT MCU from external Stellaris TIVA MCU TM4C123GH6PMI

Hani Ahmed
Intellectual 555 points
Part Number: EK-TM4C1294XL
Other Parts Discussed in Thread: TM4C1294NCPDT,

Tool/software: Code Composer Studio

Hi

I'm planning to use the TM4C1294NCPDT MCU on my costume made PCB where I need to add to my PCB some pins for debugging,

So i thought if i can use the EK-TM4C1294XL Stellaris debugger through the on board X1 terminals for programming of an external MCU.

I tried to test this between two different EK-TM4C1294XL boards but i get error communication as in the pictures below, so is there any suggestions?

 

  • 0
    TI__Guru**** 169834 points

    Hi,

    Page 4 of the EK-TM4C129XL Rev D Schematics mention that you need to remove the 0Ω resistors to debug a MCU outside of the board. This is expected as the built-in TM4C129 device will impact the JTAG communications. 

    Hope this helps,

    Rafael

  • 0 in reply to desouza
    Intellectual 555 points

    So I understood that there is no issues with the used connections, right?

    because if the problem is in the 0 OHM only so the there will be no problem to use these X1 terminals in my costume made PCB.

    BR

    Hani

  • 0 in reply to Hani Ahmed
    TI__Guru**** 169834 points

    Hani,

    The connections themselves are not a problem. Just keep in mind they need to be as short as possible to avoid any communcations issues. 

    Regards,

    Rafael